[Elecraft] KX3 sensitivity

[w1az at comcast.net]

Thanks, 

I understand how the filter effects the reading...just wasn't sure about what the standard bandwidth is. I tried it with a 500hz setting and got -138db, so it's right on. Great little radio! By the way, this is on 20m. 

Bernie 
W1AZ 

----- Original Message -----
From: "Bill W4ZV" <btippett at alum.mit.edu> 
To: elecraft at mailman.qth.net 
Sent: Wednesday, June 13, 2012 4:41:11 PM 
Subject: Re: [Elecraft] KX3 sensitivity 


w1az at comcast.net wrote 
> 
> I've used an XG3 and the audio voltage/db feature in the KX3 to check the 
> sensitivity. In CW mode with the bandwidth set at 2.8kHz I get -131db. 
> With the filter set at 0.05kHz it's -140db. I also tried with the peaking 
> filter turned on and got -148db for both filter widths. Just curious how 
> this relates to the specification of -137db, i.e. what bandwidth was used 
> for that spec? 
> 

The standard measurement bandwidth for MDS is 500 Hz. What you're seeing is 
differences due to noise bandwidth of the different filters you used. 

73, Bill 

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